Stewart will not be penalized:

NASCAR will not penalize #14-Tony Stewart for throwing his helmet at Matt Kenseth’s car during the race Saturday night at Bristol Motor Speedway, NASCAR spokesman Kerry Tharp said Monday afternoon. The sanctioning body, which has been more lenient on driver behavior the past several years, did not penalize Camping World Truck Series driver Todd Bodine for throwing his helmet at another competitor’s vehicle earlier this month at Pocono. NASCAR did confiscate Stewart’s helmet.(Sporting News)(8-28-2012)